miosis

英[maɪ'əʊsɪs] 美[maɪ'oʊsɪs]
  • n. [生](生殖细胞的)成熟分裂;减数分裂;[医]瞳孔缩小
  • miosis n.[生](生殖细胞的)成熟分裂;减数分裂;[医]瞳孔缩小
Noun:
  1. (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)

  2. reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller

【邻近词汇】